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biology
animal cells
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Organisms are made up of
cells
Most organisms are
multicellular
and have cells that are
specialised
to do a particular job
Microscopes
are needed to study cells in detail
Animal
cells
Almost all animals and plants are made up of cells. Animal cells have a basic structure.
Cytoplasm
A jelly-like material that contains dissolved nutrients and salts and structures called organelles. It is where many of the chemical reactions happen.
Nucleus
Contains genetic material
, including
DNA
, which
controls
the
cell's activities.
Cell membrane
Its
structure
is
permeable
to some
substances
but
not to others.
It therefore
controls
the
movement
of
substances
in and out of the
cell.
Most cells are
specialised
and are
adapted
for their function
Animals and plants therefore consist of many different types of
cell working together
mitochondria
where most
energy
is
released
in
respiration
ribosomes
tiny structures
where
protein synthesis
occurs